package org.sdp.pearproject.config;

import org.sdp.pearproject.dto.request.BaseRequest;
import org.sdp.pearproject.utils.JavaBeansUtil;
import org.springframework.core.MethodParameter;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class MyFormParameterInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (handler instanceof HandlerMethod) {
            HandlerMethod hm = (HandlerMethod) handler;
            MethodParameter[] parameters = hm.getMethodParameters();
            for(MethodParameter parameter: parameters) {
                Class baseClz = parameter.getParameterType();
                Class clz = baseClz;
                while(clz != null) {
                    if(clz.equals(BaseRequest.class)) {
                        JavaBeansUtil.fixParameters(request, baseClz);
                        break;
                    }
                    clz = clz.getSuperclass();
                }
            }
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }

}
